Enatega (Admin+Customer+Restaurant) : Reason for Order Cancellations feature

A clear and concise description of what you want to happen.

When the customer rejects the order, a pop-up should open and allow customer to write the reason for order cancellation OR display some common reasons of order cancellation from which user can select accordingly.

No files, tests, or entry points are named. Start by locating the customer order-rejection flow and the related admin and restaurant order views. Done should let a customer enter a cancellation reason or select a common reason when rejecting an order, with that reason available across the relevant order views.

Written by the indexing model from the issue text.